Concrete wall-form construction



Sept. 8, 1925.

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- To all whom it may comm:

UNITED STATES 1,552,885 PATENT orrlcs.

CONCmE WALL-FORM CONSTRUCTION.

Application filed larch 8,1985. lorlal Io. 18,858.

Be it known that I, WOODFORD O. SEAT, a citizen of the United States, residing at Nashville, in the county of Davidson and State of Tennessee,-have invented certain new and useful Improvements in Concrete Wall-Form Constructions; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanymg drawings, forming part of this specification.

This invention relates to improvements in concrete wall form constructlon, an ob ect of the invention being to provide a system of units of simple construction whlch may be assembled with the aid of but few elements that can be procured at comparatively low cost. The invention has to do particularly with sheet metal forms that may be used any number of times so that the cost, per operation, is comparatively small. In fact, while the initial outlay for the metallie forms may be greaterthan that required for wooden forms, nevertheless, the simplicity of the present construction and the durability of the forms is such that themetallic forms are actually cheaper, in the long run,

than wooden forms, as a great deal of the material constituting the latter is discarded after the erection of a building.

A further object of the invention is to erect the forms in such wise that the form, as a whole, will possess the proper degree of rigidity while at the same time, the lower units of the whole form may be removed,

after the lower portion of the concrete has' set, and these units again used at higher elevations in the wall.

\Vith these and other objects in view, the invention consists in certain details of construction and arrangements and combinations of parts all as will hereinafter be more fully described and the novel features thereof particularly pointed out in the appended claims.

In the accompanying drawings,---

Figure 1 is a perspective view of a corner and part of the side walls of a form erected for the construction of a wall;

Fig. 2 is a sectional view taken transversely of the form, as indicated. by the line 2-2 in Fig. 1.

. Fig. 3 is a view similar to Fig. larged for the purpose of more 0 e 2 but enarly illustrating the means for anchoring the several sheet metal units;

Fig. 4 is a top* plan view of the form 7 shown in Fig. 1; 7

Fig. 5 is a detail view of the lug for positioning the curved molding unit used at the corner of the building;

Fi 6 is a detail view show'in an additiona element for imparting rigi ity to the form and maintaining the several units in longitudinal alinement.

"Fig. 7 is a view, similar to Fig. 1, illustrating' a modification of the units, studs and means for assembling them.

7 Figs. 8 and 9 are detail views of the looking means for securing together the units and studs shown in Fig. 7. p

a In accordance with the presentinvention, the cost of initial production of the form from sheet metal is sought to be held down to a minimum and this is accomplished by utilizing units of simple contour so that no expensive stamping operations or other methods of production need to be resorted to. As illustrated in Figs. 1 to 6, the units or plates 10 for forming the sides of the wall cavity are substantially C-sh'ape in cross section as are also the studs 11. In

assembling the units 10 the lowermost line or row rests on suitable brackets 12 attached to the studs at the lower level of the wall to be constructed. .The next row of units are positioned above this bottom row and. as

will be noted the lateral flanges 13 of the several plates afford a comparatively broad bearing surface while the inturned edge portions 14 of the flange provide a rigid abutment adapted to engage against the broad flat faces of the C-shaped studs 11, the flanges on the studs serving only to strengthen the latter.

It is, of course, necessary to prevent spreading of the studs and plates of the opposite sides of the wall cavity and it is likewise essential that these elements be supported against movement towards each other. A

simple and eflicient method of accomplishing 18 in the tie rods, short bolts 19 are placed, these bolts being held in the apertures by any suitable; means, such as nuts 20. This arrangement not only gives the desired degree of rigidity to the assembled form but it 1s exceedingly simple and necessitates little preparation of the units. In addition, it will be apparent that after the concrete of the lower portion of the wall has set sufliciently, bolts 19 by which the units of the lower row are attached to the tie rods and units immediately above said lower row, may be removed and the units of the lower row withdrawn from between the wall and studs and again used at a higher elevation in the erection of the wall. This removal of the lowermost row of units will have no weakening effect on the form, because the units of the succeeding or remaining lowermost row will always be supported by the tie rods which will easily take care of the strain placed upon them as they span but a very small space between the face of the wall and the inner face of the studs. To afl'ord proper foundation for the first lowermost row of units, these units are initially supported on brackets 12 mounted on the studs.

Where it is desired to form a rounded corner at the intersection of two side walls, a circular corner molding unit 22 is secured to the sections of the sidewall forms. The

.form of curved corner mold preferred, in

order to simplify the method of securing it in place, is to have the mold possess some resiliency so as to urge its side edge portion outward and provide flanges 23 at said edges that may be clipped over lugs 24 on the inner faces of the side wall forms. These lugs need not be integral with the metallic units and, in fact, it is preferred that they be carried on the inner ends of the bolts 25 clamped between adjacent superposed units by the lug and a nut 26 on the bolt. The inner face of the lug is dished to conform to the curvature of the corner mold and movement of the lugs toward the corner or ends of the two side walls will be prevented by the wedge formation thus given the lugs.

To maintain the units in alinement lengthwise of the wall, suitable rigid elongated members such as angle irons 27 are secured along one or both sides of the form. In the construction shown in Figs. 1 to 6, this angle iron may be placed in the trough formed by the flanges 13, 14: on the units although if desired brackets, such as illustrated at 28, may be secured to the studs and the angle irons secured in said brackets.

Where it is desired to form recesses, in the wall, to give the appearance of course of blocks, suitable molding elements suchas strips 29 are secured at the inner faces of the forms.

To keep down the number of parts utilized in the form, these strips ihave apertures therein through which the tie rod In this modification, the units have outwardly turned en'd flanges 30 and these flanges at the adjacent ends of each pair of juxtaposed units and the ends of the tie rods are received in the groove 31 of the V-shaped studs 32. Instead of securing together the tie rod and 'units and the tie rod and studs by separate elements, however, the V-shape'd studs have apertures 33 therein with which apertures 34 in the ends of the tie rod and apertures 35 in the unit end flanges 30 are alined and the several parts secured together by a tapered key 36 wedged in said alined apertures. To prevent accidental displacement of the key 36, the smaller end thereof may be rovided with a slot in which may be placed a retainer 37.

In a form construction such as this the parts are not only simple and therefore easily constructed but there are comparatively a few numbers of parts and shapes so that the initial cost of producing a full set of the metallic parts compares exceedingly favorably with the cost of wooden forms. On the other hand, the life of the metal members is far greater than that of wooden forms. While only one size unit has been shown in the drawing, it will be understood that units of other sizes may be used. Also half size and greater size units for finishing out at the ends of the walls would be provided with each set.

What I claim is:

1. In a concrete Wall form construction, two opposed series of vertically alined sheet metal units, vertically extending studs on the exterior of each series, lateral flanges on the units engaging .said studs, and spacer members secured to oppositely disposed studs and to the lateral flanges of the units.

2 In a concrete wall form construction, tw opposed series of vertically alined sheet metal units, vertically extending studs, lateral flanges on said units engaging the studs, and spacer members secured to the studs and to the lateral flanges of the units, the units being detachable from the spacer members independently of the means securing the spacer members and studs together whereby lower units may be removedand reused at higher elevations in the form.

3.,In a concrete wall form construction, a series of vertically alined sheet metal units at each side of the wall cavity, vertically extending studs for each series and spacer bars connecting said studs for maintaining them in proper spaced relation, said sheet metal units being attached to said spacer bars whereby the units of one series are also held in proper spaced relation with respect to those 'of the other series.

4. In a concrete wall form construction, a series of vertically alined sheet metal units at each side of the wall cavity, vertically extending studs for each series and spacer bars connecting said studs for maintaining them in proper spaced relation, said sheet metal units beng attached to said spacer bars whereby the units of one series are also held in proper spaced relation with respect to those of the other series, and molding units carried by said spacer bars at the inner face of the sheet metal units.

5. In a concrete wall form construction, vertically disposed studs at each side of the wall cavity, spacer bars connecting studs at opposite sides of the cavity, sheet metal units arranged vertically of the studs, and meansfor'securing said units through the spacer bars, each unit being separately detachable from said bars whereby the lower units may elevations.

6. In a concrete wall form construction, vertically disposed studs at each side of the wall cavlty, spacer bars connecting studs at opposite sides of the cavity, sheet metal units arranged vertically of the studs, lateral flanges on said units engaging the spacer bars, and fastening elements extendbe removed and reused at higher ing through said spacer bars and flanges of the units.

7 In a concrete wall form construction, vertically disposed studs at each side of the wall cavity, spacer bars connecting studs at opposite sides of the cavity, sheet metal units arranged vertically of the studs, lateral flanges on said units, the edges of said flanges being inturned to form troughs on the exterior of the form, means for attaching said units to the spacer bars, and means in the troughs on the exterior of the form for maintaining the units in alinement lengthwise of the form.

8. In a concrete wall form construction, vertical studs at each side of the wall cavity, sheet metal units arranged one above the other against the studs at each side of the cavity, the studs determining the maximum space between the two sets of units, and spacer bars extending between adjacent superposed units, the ends of said bars being secured to the studs and the units being secured to the spacer bars, whereby the units and studs are held spaced apart the proper width of the wall-cavit 9. Ina concrete wall form construction, vertical studs at each side of the wall cavity, sheet metal units arranged one above the other against the studs at each side of the cavity, the studs determining the maximum space between the two sets of units, and

spacer bars extending between adjacent superposed units, the ends of said bars being secured to the studs and the units being secured to the spacer bars, whereby the units and studs are held spaced apart the proper width of'the wall cavity, and molding strips carried by the spacer bars on the interior faces of the units.

10. In a concrete form wall construction, vertical studs at each side of the wall cavity, apertures in the studs, sheet metal units arranged one above the other against the studs at each side of the cavity, apertured lateral flanges on the units, spacer bars secured in apertures in studs at opposite sides of the wall cavity, said spacer bars supporting the metal units and said spacer bars having apertures therein adapted to register with the apertures in the flanges on said units, andsecuring means extending through the alined apertures in said bars and unit flanges.

11. In a concrete wall form construction, a series of vertically arranged sheet metal units having inner flat faces forming the sides of the wall cavity, a curved sheet metal unit for forming a curved corner at intersections of two wall cavities, and means for securin said curved unit to the inner flat faces 0 the side units. Y

12. In a concrete wall form construction, a series of vertically arranged sheet metal units having inner flat faces forming the sides of the wall cavity, a resilient semicylindrical sheet metal "unit for the exterior corner formed by two intersecting wall cavities, flanges formed on the edges of said resilient curved unit, the resiliency of said unit urgin the flanged ed es thereof against the inner face of the side orming units, and lugs on the inner face of side units adapted to be engaged by said flange edges of the curved corner unit and hold said unit against movement longitudinally of the units forming the sides of the intersecting wall cavities.

13. In a concrete wall form construction, a series of vertically arranged sheet metal units having inner flat faces forming the sides of the wall cavity, a resilient semicylindrical sheet metal unit for the exterior corner formed by two intersecting wall cavities,-flanges formed on the edges of said resilient curved unit, theresiliency of said unit urging the flanged ed es thereof against the inner face of'the side orming units, and lugs on the inner face of side units adapted to be engaged by said flange edges of the curved corner unit and hold said unit against movement longitudinally of the units forming the sides of the intersecting wall cavities, each of said lugs being removab ly secured between two superposed side wall units.

' WOODFORD O. SEAT. 

